private void detach_Room_type_rates(Room_type_rate entity)
		{
			this.SendPropertyChanging();
			entity.Type = null;
		}
 partial void DeleteRoom_type_rate(Room_type_rate instance);
 partial void InsertRoom_type_rate(Room_type_rate instance);
 partial void UpdateRoom_type_rate(Room_type_rate instance);
		private void attach_Room_type_rates(Room_type_rate entity)
		{
			this.SendPropertyChanging();
			entity.Hotel = this;
		}